scripting engine

packages/api/src/main.js

@@ -43,7 +43,7 @@ function start(argument = null) {
   }
 
   app.use(cors());
-  app.use(bodyParser.json());
+  app.use(bodyParser.json({ limit: '50mb' }));
 
   useController(app, '/connections', connections);
   useController(app, '/server-connections', serverConnections);

packages/api/src/proc/sessionProcess.js

@@ -4,6 +4,7 @@ const path = require('path');
 const fs = require('fs');
 const _ = require('lodash');
 const childProcessChecker = require('../utility/childProcessChecker');
+const goSplit = require('../utility/goSplit');
 
 const driverConnect = require('../utility/driverConnect');
 const { jsldir } = require('../utility/directories');
@@ -19,7 +20,7 @@ class TableWriter {
     this.currentFile = path.join(jsldir(), `${this.jslid}.jsonl`);
     this.currentRowCount = 0;
     this.currentChangeIndex = 0;
-    fs.writeFileSync(this.currentFile, JSON.stringify(columns) + '\n');
+    fs.writeFileSync(this.currentFile, JSON.stringify({ columns }) + '\n');
     this.currentStream = fs.createWriteStream(this.currentFile, { flags: 'a' });
     this.writeCurrentStats(false, false);
     process.send({ msgtype: 'recordset', jslid: this.jslid });
@@ -140,9 +141,11 @@ async function handleExecuteQuery({ sql }) {
   await waitConnected();
   const driver = engines(storedConnection);
 
-  const handler = new StreamHandler();
-  const stream = await driver.stream(systemConnection, sql, handler);
-  handler.stream = stream;
+  for (const sqlItem of goSplit(sql)) {
+    const handler = new StreamHandler();
+    const stream = await driver.stream(systemConnection, sqlItem, handler);
+    handler.stream = stream;
+  }
 }
 
 const messageHandlers = {

packages/api/src/shell/csvWriter.js

@@ -1,13 +1,36 @@
 const csv = require('csv');
 const fs = require('fs');
+const stream = require('stream');
 
-async function csvWriter({ fileName, encoding = 'utf-8', ...options }) {
+class CsvPrepareStream extends stream.Transform {
+  constructor({ header }) {
+    super({ objectMode: true });
+    this.structure = null;
+    this.header = header;
+  }
+  _transform(chunk, encoding, done) {
+    if (this.structure) {
+      this.push(this.structure.columns.map((col) => chunk[col.columnName]));
+      done();
+    } else {
+      this.structure = chunk;
+      if (this.header) {
+        this.push(chunk.columns.map((x) => x.columnName));
+      }
+      done();
+    }
+  }
+}
+
+async function csvWriter({ fileName, encoding = 'utf-8', header = true, delimiter, quoted }) {
   console.log(`Writing file ${fileName}`);
-  const csvStream = csv.stringify(options);
+  const csvPrepare = new CsvPrepareStream({ header });
+  const csvStream = csv.stringify({ delimiter, quoted });
   const fileStream = fs.createWriteStream(fileName, encoding);
+  csvPrepare.pipe(csvStream);
   csvStream.pipe(fileStream);
-  csvStream['finisher'] = fileStream;
-  return csvStream;
+  csvPrepare['finisher'] = fileStream;
+  return csvPrepare;
 }
 
 module.exports = csvWriter;

packages/api/src/shell/fakeObjectReader.js

@@ -5,6 +5,7 @@ async function fakeObjectReader({ delay = 0 } = {}) {
     objectMode: true,
   });
   function doWrite() {
+    pass.write({ columns: [{ columnName: 'id' }, { columnName: 'country' }] });
     pass.write({ id: 1, country: 'Czechia' });
     pass.write({ id: 2, country: 'Austria' });
     pass.write({ country: 'Germany', id: 3 });

packages/api/src/utility/goSplit.js

@@ -0,0 +1,18 @@
+function goSplit(sql) {
+  if (!sql) return [];
+  const lines = sql.split('\n');
+  const res = [];
+  let buffer = '';
+  for (const line of lines) {
+    if (/^\s*go\s*$/i.test(line)) {
+      if (buffer.trim()) res.push(buffer);
+      buffer = '';
+    } else {
+      buffer += line + '\n';
+    }
+  }
+  if (buffer.trim()) res.push(buffer);
+  return res;
+}
+
+module.exports = goSplit;